Water Calcium Hardness Calculator

Online Calcium Carbonate CaCO3, Water Hardness Calculation. This calculator is used to find Hardness of salts in a water. Hardness is the measure of dissolved salts in alkaline water. To measure hardness, a water operator needs to know how many mL of ethylenediaminetetraacetic acid (EDTA) it would take to neutralize the salts. This allows you to determine how much hardness was neutralized. Hardness is also measured in mg/L of equivalent calcium carbonate.

Formula: Hardness (mg/L as CaCO₃) = (mL of EDTA X 1,000)/mL of sample

Enter EDTA Value  : mL

Enter Sample Value : mL

Hardness  : mg/L as CaCO3

Where,

• EDTA : Ethylenediaminetetraacetic acid

Example: A 100 mL sample is titrated with 0.02 M EDTA. The endpoint is reached when 18.2 mL of EDTA have been added. What is the hardness concentration?
 Hardness (mg/L as CaCO3) = mL of EDTA X 1,000/mL of sample
                                            = (18.2 X 1,000) / (100)
                                            = 182 mg/L as CaCO3

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Alkalinity Concentration Calculator | Carbonate ph Alkalinity

Online Alkalinity Concentration Calculator is used to calculate alkalinity concentration in water. Alkalinity is the water's capacity to neutralize acids or the measure of how much acid can be added to a liquid without causing a significant change in pH. It is expressed in terms of mg/L of equivalent calcium carbonate.

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Enter the value of - mL of H₂SO₄ :

Enter the value of mL of Sample :

                                                     
            
             Alkalinity Concentration : mg/L as CaCO₃


Formula: Alkalinity (mg/L as CaCO₃) = (mL of H₂SO₄ X 1000)/mL of sample

Example: A 75 mL sample is titrated with 0.02 M H2SO4. The endpoint is reached when 17.5 mL of H2SO4 have been added. What is the alkalinity concentration?
Alkalinity (mg/L as CaCO3) = mL of H2SO4 X 1000 mL of sample

                                            = (17.5 mL X 1000) / (75)

                                            = 233.3 mg/L as CaCO3